CN102027923B - Synergistic herbicidal composition containing picloram and pendimethalin and application thereof - Google Patents
Synergistic herbicidal composition containing picloram and pendimethalin and application thereof Download PDFInfo
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- CN102027923B CN102027923B CN 200910036199 CN200910036199A CN102027923B CN 102027923 B CN102027923 B CN 102027923B CN 200910036199 CN200910036199 CN 200910036199 CN 200910036199 A CN200910036199 A CN 200910036199A CN 102027923 B CN102027923 B CN 102027923B
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Abstract
The invention discloses a synergistic herbicidal composition containing picloram and pendimethalin and application thereof. The herbicidal composition comprises the picloram and the pendimethalin serving as main active ingredients, and a mass ratio of the picloram to the pendimethalin is 1-60:1-80. The synergistic herbicidal composition can be applied to preparation of herbicides for controlling postemergence weeds in corn fields. Compared with single-component herbicides, the herbicidal composition delays the weed resistance, has broad herbicidal spectrums and acts for a long time on the premise of improving herbicide effect, is safe for corns and afterculture crops, and has an obvious effect particularly when used for controlling various gramineous weeds and broadleaf weeds in the corn fields.
Description
Technical field
The invention belongs to technical field of pesticide, especially the weed killer herbicide field relates to the binary built agent of a kind of Pendimethalin and picloram.This Herbicidal combinations can be applicable to the corn postemergence weed control.
Technical background
Corn is the staple food crop of China, national cultivated area 0.2 hundred million hm
2About, minute spring sowing, summer sowing, three provinces in the northeast of China, Xinjiang mainly are spring corns, Huang-Huai-Hai mainly is summer corn.It is reported that national corn approximately has 1/2 area to be subject in various degree crop smothering, serious crop smothering area approximately 10～20% is if not weeding of field can make the corn underproduction more than 50%.The economic loss that causes in order to reduce crop smothering reduces labor intensity, and also because chemical weed control is convenient, quick-acting, the control time is long, chemical weed control is accepted by people gradually simultaneously.
In recent years, along with increasing and the extensive popularization of chemical control technology in agricultural production of weed killer herbicide kind, chemical weed control has been widely used in each period of corn growth.Because the different regions climate characteristic is different from planting habit, sowing and the time of cultivating of corn there are differences, and according to implantation time sooner or later, usually corn are divided into spring corn and summer corn.To the rule of weeds in spring, the corn field of summer and corn synchronous growth, basic chemical weed control mode is identical, but the need consideration mainly is the factors such as temperature, soil property, corn variety and farming custom.The choose reasonable weed killer herbicide not only can reduce friend peasant labour intensity, shorten working time, cultivate cost but also can reduce, reach the purpose of volume increase.
Picloram (picloram), chemical name: 4-amino-3,5,6-trichloropyridine-2-carboxylic acid, its chemical formula is: C
6H
3Cl
3N
2O
2Structural formula is:
Picloram is a kind of interior suction, selective herbicide, has plant growth regulation.Main Function is in metabolism of nucleic acid, and makes chloroplast structure and other organelle developmental deformities, and interferencing protein is synthetic, acts on meristematic tissue activity etc., causes at last plant dead.Be mainly used in corn field, harmful to most of broad leaf crops.But picloram is invalid to grassy weed, and, during crop rotation, consider that residual picloram on the impact of broad leaf crop (beans, vegetables, cotton, tobacco etc.), therefore, is subject to certain limitation in the use.
Pendimethalin (pendimethalin), a kind of dinitroaniline herbicide, chemical name: N-(1-ethyl propyl)-2,6-dinitro-3, the 4-dimethylaniline, its structural formula is:
Pendimethalin is meristematic cell division inhibitor, does not affect the sprouting of weed seed.Work after absorbing medicament at suppressing weed seed germination during Young bud, young stem, young root.Prevent and kill off annual gramineous weed and some broad leaved weed in the corn field.As: the weeds such as lady's-grass, eleusine indica, barnyard grass, Amaranthus retroflexus, kitchen garden.But Pendimethalin is limited to part broad leaved weed preventive effect, and especially the preventive effect of perennial broadleaf weed is relatively poor, has seriously restricted its use in Chemical Weeding in Maize Field.
Corn field herbicide is limit by crop safety at present, the herbicide spectrum is also limited, be used alone the weed killer herbicide single dose and can not control completely effectively the generation of corn field weed, moreover some weed killer herbicide is because water-soluble large or the field lasting period is oversize, consumption is excessive or the inhomogeneous residual hazard that all easily causes this season crop or succession crop of dispenser.Therefore, but selection herbicide spectrum of the present invention is different, being made into mixture after two kinds of suitable decrements of weed killer herbicide of the picloram of pluses and minuses complementation and Pendimethalin uses, so both enlarged the herbicide spectrum, obviously improved herbicidal effect, also avoided this season is done the deposits yields poisoning and succession crop produced the possibility of residual hazard.
Summary of the invention
The Synergistic herbicide compositions that the purpose of this invention is to provide a kind of picloram and Pendimethalin.
Another object of the present invention provides this Herbicidal combinations for the preparation of the application in the weed killer herbicide of cornfield weeding.
The Synergistic herbicide compositions of a kind of picloram and Pendimethalin is characterized in that this Herbicidal combinations take picloram and Pendimethalin as main active ingredient, and wherein, the mass ratio of picloram and Pendimethalin is 1～60: 1～80.The mass ratio of preferred picloram and Pendimethalin is 1～40: 1～50, and most preferably the mass ratio of picloram and Pendimethalin is 1～10: 1～10.
In Synergistic herbicide compositions, the two quality percentage composition in Herbicidal combinations of picloram and Pendimethalin is 1～85%, the preferred mass percentage composition is 20～75%, and most preferably the quality percentage composition is that 30～50%. active ingredients of the present invention all are present in the composition with the synergy effective dose.
In the binary built preparation of picloram of the present invention and Pendimethalin, except the active ingredients such as picloram and Pendimethalin, can also add the auxiliary agents such as conventional surfactants, thickener, solvent or solid packing that allow on the pesticidal preparations and be mixed with any one formulation that allows on the agricultural chemicals.Preferably be processed into wetting powder, soluble powder, missible oil, suspending agent, water dispersion granule etc.Using said composition can adopt and the known method such as spray.
Described surfactant specifically can adopt alkylphenol polyoxyethylene, phenethyl phenol polyethenoxy ether, methyl naphthalene sulfonate formaldehyde condensate, polyoxyethylene nonylphenol ether, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) etc., solid packing can be selected kaolin, diatomite etc., and solvent can adopt ethylene glycol, cyclohexanone, dimethylbenzene, water etc.These auxiliary agents can alone or mixing and usefulness, also can add other auxiliary material that allows on the pesticidal preparations.
" % " of the present invention is weight percentage.
Synergistic herbicide compositions of the present invention can be used in the corn field postemergence weed control, particularly uses in various grass family and the broad leaved weed to have remarkable result in preventing and kill off corn field.
Herbicidal combinations of the present invention has the following advantages:
1, activity of weeding is high.Absorption post-emergence herbicide in the picloram, and Pendimethalin is meristematic cell division inhibitor.That is to say, Herbicidal combinations of the present invention can kill weeds by two kinds of different modes, can greatly improve the removing activity of Herbicidal combinations.
2, herbicidal spectrum is wide, and the lasting period is long.Picloram is mainly prevented and kill off broad leaved weed, and Pendimethalin can be prevented and kill off annual gramineous weed and some broad leaved weed, and the lasting period is longer, and after both mixed, herbicidal spectrum was wider.
3, safe.Because the use content of various active ingredients makes medicament under the prerequisite that has improved drug effect, its safety to corn and succession crop also is improved.
Therefore, Synergistic herbicide compositions of the present invention can be used in the weed killer herbicide of preparation corn field postemergence weed control, particularly uses in the weed killer herbicide of grass family and broad leaved weed in the corn field is prevented and kill off in preparation.
Embodiment
Embodiment 1
Picloram 20%, Pendimethalin 15%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, dodecyl sodium sulfate 4%, xanthans 2%, water supplies 100%, and being mixed with the quality percentage composition according to the formulation method of routine is 35% suspending agent.
Embodiment 2
Picloram 16%, Pendimethalin 14%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 8%, alkylphenol polyoxyethylene 7%, ammonium sulfate 5%, sodium lignin sulfonate supplies 100%, and being mixed with the quality percentage composition according to the formulation method of routine is 30% soluble powder.
Embodiment 3
Picloram 3%, Pendimethalin 30%, calcium dodecyl benzene sulfonate 6%, alkylphenol polyoxyethylene 4%, dimethylbenzene 100%, being mixed with the quality percentage composition according to the formulation method of routine is 33% missible oil.
Embodiment 4
Picloram 20%, Pendimethalin 4%, water supplies 100%, is mixed with the quality percentage composition and is 24% aqua.
Embodiment 5
Picloram 10%, Pendimethalin 60%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, sodium lignin sulfonate 4%, white carbon 9%, kaolin supplies 100%, and being mixed with the quality percentage composition according to the formulation method of routine is 70% wetting powder.
Embodiment 6
Picloram 3%, Pendimethalin 20%, sodium lignin sulfonate 7%, neopelex 5%, ammonium sulfate 5%, diatomite supplies 100%, and being mixed with the quality percentage composition according to the formulation method of routine is 23% water dispersion granule.
Embodiment 7
Picloram 69%, Pendimethalin 1%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, dodecyl sodium sulfate 4%, xanthans 2%, water supplies 100%, and being mixed with the quality percentage composition according to the formulation method of routine is 70% suspending agent.
Embodiment 8
1), toxicity determination test
Utilize the preparation among the embodiment 1～4, measure it to the co-toxicity coefficient of Common Farmland Weeds lamb's-quarters.
Test method: the seed of quantitative lamb's-quarters is seeded in respectively in the Disposable paper cup of 9cm, sows 10～15 seeds in every glass, in illumination box, cultivate, treat lamb's-quarters 3～6 leaves during the phase, do the composition spray processing of spraying in crawler type.Continuation cultivation in the greenhouse after processing, routine observation is respectively processed the preventive effect to weeds, and the weeds fresh weight behind the 30d after each processing of weighing is pressed and is calculated its toxicity regression curve and co-toxicity coefficient by the abundant method of Sun Yun (nineteen sixty proposition).Co-toxicity coefficient shows that greater than 100 two kinds of active principles have synergistic effect, and co-toxicity coefficient shows that less than 100 two kinds of active principles have antagonism.Measurement result is as shown in table 1.
Table 1 toxicity determination test result
As can be seen from the above table, the co-toxicity coefficient after two kinds of active principles are composite illustrates that all greater than 100 the present invention has obvious synergistic effect.
2, field control effectiveness test.
Reagent agent:
4 kinds of binary built Herbicidal combinations among the embodiment 1～4.
The contrast medicament:
33% pendimethalin missible oil (commercially available), 24% picloram aqua (commercially available).
For studying thing: corn
Maize seedling was 3～5 leaf phases, grew fine, and robust plant is without other damage by disease and insect.
Prevent and kill off object:
The weeds such as lady's-grass, eleusine indica, kitchen garden, Amaranthus retroflexus.
Test method:
According to the area of experimental plot, the accurate good various medicaments of weighing, and after being watered dilution, utilize knapsack sprayer, carry out even spraying, the Fan spray head of sprinkler selection weed killer herbicide special use.During spraying, note liquid is evenly sprayed application in the experimental plot phenomenon of accomplishing there is not drain spray, spraying more.
After the test respectively behind medicine 20d, 40d observe the weeds death condition, and the activity of weeding of more various medicaments (consumption is the consumption of every mu of ground active ingredient).In addition, also to behind medicine, observe the condition of production of crop in 1～15d, to investigate medicament whether crop be had poisoning.
Embodiments of the invention preparation weeding test effect see the following form 2 (20d behind the medicine) and table 3 (40d behind the medicine)
Table 2 field control effectiveness test result (20d behind the medicine)
| Treatment agent | Consumption (ga.i/ mu) | Grass family preventive effect (%) | Broad leaved weed preventive effect (%) | Total preventive effect (%) |
| Embodiment 1 | 50 | 95 | 91 | 94 |
| Embodiment 2 | 50 | 90 | 94 | 91 |
| Embodiment 3 | 50 | 89 | 92 | 90 |
| Embodiment 4 | 50 | 95 | 92 | 93 |
| 24% picloram aqua | 80 | - | 70 | 50 |
| 33% pendimethalin missible oil | 66 | 89 | 82 | 88 |
Table 3 field control effectiveness test result (40d behind the medicine)
| Treatment agent | Consumption (ga.i/ mu) | Grass family preventive effect (%) | Broad leaved weed preventive effect (%) | Total preventive effect (%) |
| Embodiment 1 | 50 | 89 | 87 | 88 |
| Embodiment 2 | 50 | 85 | 89 | 86 |
| Embodiment 3 | 50 | 84 | 88 | 87 |
| Embodiment 4 | 50 | 90 | 87 | 88 |
| 24% picloram aqua | 80 | - | 65 | 34 |
| 33% pendimethalin missible oil | 66 | 79 | 72 | 75 |
Can find out from table 2 and table 3, the present invention has significant preventive effect to grass family and broad leaved weed, and synergy is remarkable, and the lasting period is long.
Table 4 medicament is to the security survey result of crop
Each maize seedling of processing in the residential quarter grows fine, and has no any medicine spot, illustrates that various medicaments are to the equal safety of corn.
Claims (6)
1. the Synergistic herbicide compositions of a picloram and Pendimethalin is characterized in that this Herbicidal combinations take picloram and Pendimethalin as active ingredient, and this Synergistic herbicide compositions prepares by following steps:
Get picloram 20%, Pendimethalin 15%, di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate 6%, dodecyl sodium sulfate 4%, xanthans 2%, water supplies 100%, and being mixed with the quality percentage composition according to the formulation method of routine is 35% suspending agent.
2. the Synergistic herbicide compositions of a picloram and Pendimethalin is characterized in that this Herbicidal combinations take picloram and Pendimethalin as active ingredient, and this Synergistic herbicide compositions prepares by following steps:
Get picloram 16%, Pendimethalin 14%, di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate 8%, alkylphenol polyoxyethylene 7%, ammonium sulfate 5% supplies 100% with sodium lignin sulfonate, and being mixed with the quality percentage composition according to the formulation method of routine is 30% soluble powder.
3. the Synergistic herbicide compositions of a picloram and Pendimethalin is characterized in that this Herbicidal combinations take picloram and Pendimethalin as active ingredient, and this Synergistic herbicide compositions prepares by following steps:
Get picloram 3%, Pendimethalin 30%, calcium dodecyl benzene sulfonate 6%, alkylphenol polyoxyethylene 4% supplies 100% with dimethylbenzene, and being mixed with the quality percentage composition according to the formulation method of routine is 33% missible oil.
4. the Synergistic herbicide compositions of a picloram and Pendimethalin is characterized in that this Herbicidal combinations take picloram and Pendimethalin as active ingredient, and this Synergistic herbicide compositions prepares by following steps:
Get picloram 20%, Pendimethalin 4%, water supplies 100%, is mixed with the quality percentage composition and is 24% aqua.
5. Synergistic herbicide compositions claimed in claim 1 is for the preparation of the application in the weed killer herbicide of corn field postemergence weed control.
6. application according to claim 5 is characterized in that described mixed herbicidal composite is for the preparation of the application in the weed killer herbicide of preventing and kill off grass family and broad leaved weed in the corn field.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910036199 CN102027923B (en) | 2009-09-28 | 2009-09-28 | Synergistic herbicidal composition containing picloram and pendimethalin and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910036199 CN102027923B (en) | 2009-09-28 | 2009-09-28 | Synergistic herbicidal composition containing picloram and pendimethalin and application thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102027923A CN102027923A (en) | 2011-04-27 |
| CN102027923B true CN102027923B (en) | 2013-01-23 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1487789A (en) * | 1999-11-17 | 2004-04-07 | Selective herbicides based upon 2,6-disubstituted pyridine derivatives | |
| CN1589101A (en) * | 2001-09-21 | 2005-03-02 | 拜尔农作物科学股份公司 | Herbicides containing substituted thien-3-yl-sulfonylamino(thio)carbonyl-triazolin(thi)one compound |
| CN1960634A (en) * | 2004-03-10 | 2007-05-09 | 孟山都技术公司 | Herbicidal compositions containing N-phosphonomethyl glycine and an auxin herbicide |
-
2009
- 2009-09-28 CN CN 200910036199 patent/CN102027923B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1487789A (en) * | 1999-11-17 | 2004-04-07 | Selective herbicides based upon 2,6-disubstituted pyridine derivatives | |
| CN1589101A (en) * | 2001-09-21 | 2005-03-02 | 拜尔农作物科学股份公司 | Herbicides containing substituted thien-3-yl-sulfonylamino(thio)carbonyl-triazolin(thi)one compound |
| CN1960634A (en) * | 2004-03-10 | 2007-05-09 | 孟山都技术公司 | Herbicidal compositions containing N-phosphonomethyl glycine and an auxin herbicide |
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| CN102027923A (en) | 2011-04-27 |
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